1 definition found donahue - U.S. Gazetteer (1990) : Donahue, IA (city, FIPS 21720) Location: 41.69188 N, 90.67505 W Population (1990): 316 (103 housing units) Area: 0.9 sq km (land), 0.0 sq km (water) Zip code(s): 52746